diff --git a/rfc/README.md b/rfc/README.md
index 04a63a17d20af..84c660f740235 100644
--- a/rfc/README.md
+++ b/rfc/README.md
@@ -87,3 +87,4 @@ The list of all RFCs can be found here.
 | 49 | [Support sync with DataHub](./rfc-49/rfc-49.md)    | `ONGOING` |
 | 50 | [Improve Timeline Server](./rfc-50/rfc-50.md) | `UNDER REVIEW` | 
 | 51 | [Change Data Capture](./rfc-51/rfc-51.md) | `UNDER REVIEW` |
+| 52 | [Introduce Secondary Index to Improve HUDI Query Performance](./rfc-52/rfc-52.md) | `UNDER REVIEW` |